SYSTEMS AND METHODS FOR REDUCING MAGNESIUM, CALCIUM, AND/OR SULFATE FROM SODIUM CHLORIDE BRINE DURING CONCENTRATION BY HIGH-PRESSURE NANLFILTRATION

SYSTEMS AND METHODS FOR REDUCING MAGNESIUM, CALCIUM, AND/OR SULFATE FROM SODIUM CHLORIDE BRINE DURING CONCENTRATION BY HIGH-PRESSURE NANLFILTRATION

Systems and methods for reducing at least one of magnesium, calcium and/or sulfate from sodium chloride brine are described. Systems and methods include nanofiltrating seawater to reduce calcium, magnesium, and sulfate therein. Systems and methods also include introducing permeate from the nanofiltr...

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Bibliographische Detailangaben
1. Verfasser: Herron, John R
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:Systems and methods for reducing at least one of magnesium, calcium and/or sulfate from sodium chloride brine are described. Systems and methods include nanofiltrating seawater to reduce calcium, magnesium, and sulfate therein. Systems and methods also include introducing permeate from the nanofiltration step as a feed to reverse osmosis (RO) followed by a progressive nanofiltration array. Systems and methods also include feeding the lower salinity permeate from the introducing permeate step to another RO system. Systems and methods also include feeding retentate from the feeding step to a progressive nanofiltration system that concentrates the brine to an appropriate salinity.